Smoke consumer



Juiy', `1923.

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` v vf-Z0 Fgn Wtnesses [n1/anim W www Frederic/C I? Fischer July 3, 1923.

1,460,956 F. P. FISCHER SMOKE' CONSUMER Filed May 15. 1921 2 sheetsu-sheet 2 W1' ineses r Inventor F'; v'eczer 'c/ t E F115' e1 Patented July 3, 1923a j 'UNITED l stares '7 Maaate i FREDERICK I. FISCHER, or CHICAGO, ILLINOIS.

j IsivIoKn CONSUMER.

2'App/11cation filed May 13, 1921. seriai No.4`eai5j1. l

Consumers, of v`which the following is a' specification. v

My invention relates to improvements in smoke consumers and has for its main object the provision of means to burn all carbons and heavy. gases passing from the combustion chamber of a boiler to the smoke stack and' to prevent them from escaping through said stack to the atmosphere.

Another object is to provide means to warm fresh air by the use of heated furnace smoke and gases and forcibly feed such heated air to the fire through the grate. Other objects will appear hereinafter. The invention consists in the Combinations and arrangements of described and claimed.

The invention will be best understood by reference to the accompanying drawings forming a part of this specification, and in which, Fig. l is a side elevation of my invention applied to a boiler, portions of the figure being brokenaway;

Fig. 2 is an enlarged fragmentary view showing the regulating valve, being in part' a section on line 2-2 of Fig. 1;

Fig. 3 is an enlarged sectional view of the safety valve taken on line 3 3 of Fig. 4L;`

Fig. l is a top plan view of parts shown in Fig. 1; and,

Fig. 5 is a front `view thereof, partly in section.

In the form illustrated, my invention is shown applied to an ordinary re-boX boiler 10 provided with agrate 11 and a space or chamber 12 forming the usual ash box, be-

neath the grate. A smoke pipe 13 connects the usual smoke chamber or smoke box of the boiler with the smoke stack 14;. All of the above is well known construction.

-In the usual operation of the boiler or furnace, especially wherebituminous coal is consumed improper and incomplete combustion frequently takes place, and particles of finely divided carbon containing inflammable gases escape from the smoke stack in the formof heavy, black smoke, which entails a loss of fuel and also becomes a troublesome nuisance. I prevent such loss parts hereinafter of fuel value and avoid the smoke nuisance,

and at lthe same timeprovide-.acforce draft with the followingconstructioni A conduit 15 is connected with pipe .13, communicating withthe interior thereof, and is provided' with [a fresh air ductl or inlet pipe 16 Vnear saidconnection, forming.' a Y with said conduitf` Avalve 1,7 is 'mounted inthe junction. of air pipe fand conduit, asbest shown in F ig`. 2, an'd'is provided with a handle 18' whereby the valve ,the smoke may be-swung intof` either fork oftheY i and the'effectivecrosjs-sectionof'either the,`

airpipe or fthe conduit maybevaried and the admission of air through'the air pipe or of gas from the smoke pipe through the i conduit may be regulated. The conduit eX- tends over the boiler to the front portion thereof and descends in two branches 20 and 21, each communicating at one side with l the chamber 12 beneath the grate. A safety valve 19 is provided for said conduit, being mounted thereon at any Convenient point. If desired, only one vertical Conduit may be used and connected with the chamber 12 near the front center thereof. l

A fan 22 is mounted in a casing 23 interposed in said conduit adjacent the forward end of the boiler and over a floor 24 which is located immediately above the boiler and beneath the smoke pipe 13 and the horizontal portion of conduit 15, as best shown in F ig. 1. A pulley 25 is mounted on the outer end of the fan shaft 26 which is rotatably mounted in the fank casing and operates the fan, said pulley being operated by va belt 27 which maybe driven by any suitable power supplying member Y I (not shown). v j

lVhile I have illustrated and described the preferred form of construction for carrying my invention intoeffect, this is capable of variation and modificationwithout departing from the' spirit of the invention. I, therefore, do not wish tovbe limited to the precise details of the construction set'forth, butdesire to avail myself of such variations and modifications as come within the scope with a nearby smoke stack, a conduit eXtendcent said smoke pipe, means interposed in said conduit for forcing carbon and gas from said pipe and air from said duct through the grate, and; a single valve to regulate the proportionate amount of carbon` and of air to be admitted to said chamber.

i 2. In lcombination with a boiler provided with a grate and an ash pit beneath said grate and With a pipe connecting said boiler with the smoke stack, a Y-shaped conduit having one lfork connecting With said pipe and the other fork forming -a-n kair inlet, the stern osaid conduit extending over said boiler and communicating with said ash pit, a control v alve at the junction of said` orks, means mounted in the front of said stem for yilorcing a current from said pipe and inlet to 'said' pit, and a safety valve interposed in saidy conduit.

3. In combination vvithv a stationary boiler provided With a grate and chamber beneath said grate and vvith a smoke `pipe connecting said boiler With a smoke stack adjacent saidboiler, a conduit having two branches opening through the front Wall of said chamber adjacent each side thereof Vand a stem communicating With said pipe, a fresh air duct connected lwith said conduit adjacent said smoke pipe to Warm the air with the smoke pipe gases before `enteringrg" said chamber, a fan mounted in said conduit at the junction of said branches `for feeding fresh air from said duct and heated gases and carbon from said pipe throughl said grate, and means for regulating the'fintake 

